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Bitter tastes quickly turn milk chocolate fans sour

Researchers found that dark chocolate fans have a higher tolerance to bitter tastes than milk chocolate fans. The study used rejection thresholds to test food acceptability and could lead to cost-savings for the industry by identifying product rejection levels.

SourcePenn State·JournalJournal of Food Science·DateAug 30, 2012

Study to examine trends in urban agriculture

Researchers will survey producers and interview key stakeholders in 15 cities to examine trends in urban farming. Urban agriculture's diversity in production methods and its potential impact on community development and access to healthy food are also being studied.

Tibetan Plateau may be older than previously thought

Researchers suggest that the Tibetan Plateau's growth of high topography began around 30 million years ago, contrary to previously held beliefs. This new finding was made possible by analyzing samples from the eastern edge of the plateau using various geological methods.

SourcePenn State·JournalNature Geoscience·DateAug 16, 2012

Continuous oral contraceptive pills offer women earlier pain relief

Researchers found that continuous oral contraceptive pills provide earlier relief for moderate to severe menstrual cramps, reducing symptoms by up to six months. Women taking the continuous treatment reported significant pain relief due to uninterrupted treatment, outperforming cyclic treatment in terms of pain relief timing.

SourcePenn State·JournalObstetrics and Gynecology·DateAug 15, 2012

Mothers, children underestimate obesity in China

Research found that 69% of overweight Chinese children underestimated their own weight, while 72% of mothers rated their children as normal or underweight. This highlights the importance of accurate perceptions of weight in preventing childhood obesity.

SourcePenn State·JournalWorld Journal of Pediatrics·DateAug 6, 2012

Microbes make 'clean' methane

Researchers create microbial factories to transform clean electricity from solar, wind, or nuclear power into renewable methane fuel. This approach could eliminate the need for fossil resources and produce eco-friendly alternatives like ethanol.

Polar bear evolution tracked climate change, new DNA study suggests

A new DNA study provides clues about the species' evolution, suggesting that climate change and genetic exchange with brown bears helped create the polar bear as we know it today. The research found evidence of fluctuating population sizes over the past million years, growing during cooling periods and shrinking in warmer times.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateJul 23, 2012

Exposure to violence has long-term stress effects among adolescents

A study by Penn State researchers has found that exposure to violence among adolescents can have lasting physical stress response effects up to a year after the exposure. Cortisol levels were found to be lower in males with higher exposure to violence, suggesting an evolutionary adaptation to suppress cortisol levels.

SourcePenn State·JournalJournal of Adolescent Health·DateJul 3, 2012

Multiple proxy datasets can clarify ancient climate regimes

Researchers used tree ring data from the US Pacific Northwest and oxygen isotope analysis of lake sediments to clarify ancient climate regimes. The study suggests that drought patterns in the American West may have varied across different regions, with some areas experiencing wetter winters than expected.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateJul 2, 2012

Acoustic tweezers capture tiny creatures with ultrasound

Bioengineers and biochemists at Penn State developed acoustic tweezers that can manipulate living materials like blood cells and small organisms using sound waves. The device can precisely trap and move cellular-scale objects essential for fundamental biomedical research, offering a cost-effective alternative to optical tweezers.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateJun 29, 2012

Menopausal women could 'work out' their hot flashes

A study of 92 menopausal women found that regular physical activity can lead to a decrease in hot flash symptoms. The researchers used objective and subjective methods to track the frequency of hot flashes, finding that exercising actually reduced symptoms in most participants, contradicting previous assumptions.

SourcePenn State·JournalMenopause·DateJun 27, 2012

Online weight loss programs that feature successful dieters may help

Researchers created a website called AchieveTogether to study the effectiveness of positive deviance in weight loss. Users lost about 4.5 pounds more weight than those without access to the site. The study suggests that online weight loss programs featuring successful dieters may be an effective strategy for weight loss.

SourcePenn State·JournalAmerican Journal of Preventive Medicine·DateJun 20, 2012

Blogging relieves stress on new mothers

Research found that blogging positively impacts new mothers' well-being by increasing feelings of social support, marital satisfaction, and reducing parenting stress. Blogging provides an outlet for stay-at-home moms to connect with family and friends, showcasing their hobbies and accomplishments.

SourcePenn State·JournalMaternal and Child Health Journal·DateJun 19, 2012

Inner ear may hold key to ancient primate behavior

Researchers analyzed fossilized primate skulls and CT scans of living primates to determine how extinct animals moved, focusing on the bony labyrinth of the inner ear. The study found that ancient primates were relatively agile, with some species moving faster than their Old World ancestors.

Planting the right messages may make farms safer

Researchers at Penn State found that social marketing campaigns could motivate farmers to install rollover protective structures on older-model tractors, reducing deaths in tractor-rollover accidents. Offering rebates and highlighting child safety concerns were key motivators for farmers.

SourcePenn State·JournalJournal of Agromedicine·DateJun 12, 2012

Appalachian infant death rates point to healthcare deficit

Infant mortality rates remain high in Appalachia, with white infants facing disproportionately higher deaths compared to non-Appalachian regions. Poverty and limited access to physicians contribute to the deficit, emphasizing the need for improved prenatal care and healthcare policies.

SourcePenn State·JournalThe Journal of Rural Health·DateJun 6, 2012

Biochip-based device for cell analysis

Researchers at Penn State have developed a biochip-based device that can rapidly screen cells for leukemia or HIV. The device uses microfluidic drifting technology to focus particles or cells in a single stream, eliminating the need for bulky lenses and mirrors, and potentially reducing costs to $1,000 from current prices of $100,000.

SourcePenn State·JournalBiomicrofluidics·DateMay 30, 2012

Technology convergence may widen the digital divide

Rural residents may face a digital divide due to the increasing adoption of technology that replaces copper lines with faster, cheaper, and more convenient alternatives. While cellular phones offer an affordable option, most cell phone companies charge per minute, and service can be unreliable.

Reducing off-label use of antipsychotic medications may save money

A Penn State study found that 57.6% of patients prescribed antipsychotic medications in 2003 did not have schizophrenia or bipolar disorder, highlighting potential savings through reduced off-label use. The study suggests that Medicaid programs may benefit from reducing non-FDA-approved use of these medications.

SourcePenn State·JournalThe American Journal of Managed Care·DateMay 15, 2012

It takes a village to keep teens substance free

A new study by Penn State researchers reveals that parenting behaviors and adolescents' substance-use behaviors are significantly correlated. Higher levels of parental knowledge and disciplinary consistency lead to a lower likelihood of substance use, while inconsistent parents and aware peers can increase the risk of substance use.

SourcePenn State·JournalJournal of Studies on Alcohol and Drugs·DateMay 1, 2012

Record-breaking radio waves discovered from ultra-cool star

Scientists at Penn State's Arecibo Observatory have discovered flaring radio emission from an ultra-cool star, shattering the previous record for lowest stellar temperature at which radio waves were detected. The star, named J1047+21, is a brown dwarf with a surface temperature not much higher than that of a giant planet.

Binge eating may lead to addiction-like behaviors

Researchers found a link between bingeing on fat and cocaine-seeking behavior in rats, indicating that conditions promoting excessive behavior towards one substance can increase the probability of excessive behavior towards another. This study may shed light on the factors that promote substance abuse and addiction.

SourcePenn State·JournalBehavioral Neuroscience·DateApr 24, 2012

$3.5 million grant helps teachers help students

A new study will test a professional development program called CARE for Teachers, which aims to enhance teachers' social and emotional competence. The program provides emotion skills instruction, mindfulness practices, and caring techniques to promote empathy and compassion in the classroom.